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Title: SAW Sensors for Chemical Vapors and Gases

Here, surface acoustic wave (SAW) technology provides a sensitive platform for sensing chemicals in gaseous and fluidic states with the inherent advantages of passive and wireless operation. In this review, we provide a general overview on the fundamental aspects and some major advances of Rayleigh wave-based SAW sensors in sensing chemicals in a gaseous phase. In particular, we review the progress in general understanding of the SAW chemical sensing mechanism, optimization of the sensor characteristics, and the development of the sensors operational at different conditions. Based on previous publications, we suggest some appropriate sensing approaches for particular applications and identify new opportunities and needs for additional research in this area moving into the future.
Authors:
 [1] ;  [1] ;  [1]
  1. National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States)
Publication Date:
Report Number(s):
A-UNIV-PUB-136
Journal ID: ISSN 1424-8220; SENSC9; PII: s17040801
Grant/Contract Number:
FE0004000
Type:
Accepted Manuscript
Journal Name:
Sensors
Additional Journal Information:
Journal Volume: 17; Journal Issue: 4; Journal ID: ISSN 1424-8220
Publisher:
MDPI AG
Research Org:
National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; acoustic waves; acoustoelectric effect; interdigital transducer; mass loading; piezoelectric effect; radiofrequency; sensing layer; viscoelasticity
OSTI Identifier:
1393415